JPH0790945A - Attaching method for water sealing hose for concrete joint - Google Patents

Abstract

PURPOSE:To set water sealing hoses as an ancillary work on assembling forms and enable workers to operate in the downward posture, by supporting the water sealing hoses through which a cutting-off agent can be injected from respective positions at the peripheral face, on the placed faces of precast concrete by pouring concrete. CONSTITUTION:Four recessed grooves 12 are arranged at true outer periphery of the hose body 11 of a water sealing hose 1, at every equal pitch in the peripheral direction. A number of small holes 13 are made at the recessed groove bottom in the grooved direction and the small holes 13 are closed by a belt-form continuous valves 14. Next, the whole external face is enveloped by a vinyl mesh 15 to press the continuous valves 15. On assembling forms 7 of precast concrete 2, the water sealing hoses 1 are placed at appropriate positions of the upper face of the form bottom 71 and held from both sides by plywood strips 81 a little thinner than the hose outer dia. and fixed with nails. After the precast concrete 2 has brought out the strength, the form 7 and the polywood strips 81 are removed. And post-cast concrete is placed. A cut-off agent 5 is injected into the clearance 4 at the joint face 21 through the hose 1 to sufficiently close the clearance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a water stop hose for a concrete splicing part using a water stop hose for injecting an injection material from various places on the peripheral surface.

[0002]

2. Description of the Related Art Conventionally, a gap is often formed on a joint surface between a precast concrete and a postcast concrete, particularly on a joint surface when the postcast concrete is spliced below the precast concrete. This gap not only causes leakage of water but also causes a decrease in structural proof stress, and therefore, it is generally filled by injecting a water-stopping injection material such as an epoxy resin, a urethane resin, or a cement-based slurry. For the injection, for example, a water-stopping hose 1 as shown in FIGS. 17 and 18 in which the supplied water-stopping injection material is jetted from various places on the peripheral surface to the periphery is used. As shown in FIG. 2, after the precast concrete 2 is cast and before the postcast concrete 3 is spliced, the splicing surface 21 of the precast concrete 21
And a water-stopping injection material 5 is injected into the gap 4 generated by splicing (see Japanese Patent Laid-Open No. 5-195591). in this case,
The following means are taken to attach the water shutoff hose 1. As shown in FIG. 19, a drilling hole is drilled on the joint surface 21 of the precast concrete 2 to set an anchor or a curl plug, and the waterproof hose 1 is attached by a special clip 6 fixed to these. As shown in FIG. 20, the water stopping hose 1 is attached to the joint surface 21 of the precast concrete 2 with the special clip 6 fixed by nailing.

[0003]

However, such mounting has the following problems. If the mounting surface of the still water hose 1 is a concrete bottom surface,
That is, when the splicing surface 21 of the precast concrete 2 is located on the lower surface, the mounting work becomes an upward work, resulting in a decrease in work efficiency and a decrease in mounting accuracy. During the installation work of the waterproof hose 1, there are protrusions such as reinforcing bars on the connecting surface 21, which makes the installation work troublesome. Since it takes a relatively long time to attach the water shutoff hose 1, there is a hindrance to the start of the post-work (rebar assembly, formwork assembly, etc.). As shown in FIG. 21, it is necessary to install a work floor such as a scaffold for most of the work, which requires work at a high place, which is highly dangerous. The present invention seeks to solve these problems.

[0004]

In order to achieve the above object, according to the present invention, a water-stopping hose 1 for jetting a water-stopping injection material from various places on the peripheral surface is driven into a joint surface 21 of a precast concrete 2. It is characterized by being supported. However, still water hose 1
Since it cannot exert its function when it is buried in the concrete 2 (Fig. 16A), it is necessary to drive it so that at least a part or most of the peripheral surface is exposed at each place ( (Figures B, C).

[0005]

[Advantage] Due to the above structure, the water-stopping hose may be attached to the inner surface of the formwork of the precast concrete, and it is possible to perform the work as an incidental work when the formwork is assembled and the worker can work downward. To

[0006]

EXAMPLES Examples of the present invention shown in FIGS. 1 to 14 will be described below. These examples relate to the concrete splicing part of the basement skeleton in the reverse construction method of various concrete buildings. In each of the following examples, the water shut off hose 1 shown in FIGS. 17 and 18 is used. The water shut off hose 1 is made of hard plastic and has four strips that are long in the material length direction on the outer circumference of the hose body 11. The concave grooves 12 are arranged at equal intervals in the circumferential direction, and a large number of small holes 13 are arranged at the groove bottom at equal intervals in the groove direction, and these small holes are each formed of a strip of neoprene rubber. Closed with the continuous valve 14 of
The entire outer circumference is wrapped with a vinyl mesh 15, and the continuous valve 15 is pressed by the vinyl mesh to pressurize a water injection injection material such as epoxy resin, urethane resin, cement-based slurry into the hose body 1. When supplied, as shown in FIG. 18, each continuous valve 14 is compressed and deformed by the pressure to open, and the water-stopping injection material is jetted to the periphery.

Part 1 FIGS. 1 to 3 show a first embodiment of a reverse-cast underground outer wall, and in assembling the formwork 7 of the precast concrete 2, a precast concrete lower surface which is a connecting surface 21 is formed. The water blocking hose 1 is laid along the striking surface 21 at an appropriate place on the upper surface of the bottom portion 71 of the frame, and the water blocking hose is fixed by the supporting means 8. In this case, the supporting means 8 is provided on both sides of the water blocking hose 1 with nailed plywood strips 81 shown in FIG. 2 having a thickness slightly smaller than the outer diameter of the water blocking hose 1 on the bottom 71 of the frame. Then, the waterproof hose 1 is sandwiched by the plywood strips from both sides, and the mounting work thereof may be performed on the form bottom 71 supported by the support 9, as shown in FIG.
The form bottom portion 71 is usually located at a height of about 1 m from the root cutting bottom, so that a scaffold is not necessary. If cement paste enters the lower surface of the water blocking hose 1, the function of the water blocking hose will be impaired, so consideration must be given to this point. The mold 7 is dismantled when a predetermined strength is developed in the cast concrete 2, and at this time, the plywood strip 81 is also removed. Therefore, as shown in FIG.
The plywood strip 81 forms a recess 22 and a part of the water blocking hose 1 is exposed in each of the recesses. After that, as shown by the chain double-dashed line in FIG. 3, the post-cast concrete 3 is spliced by the conventional construction method, but the waterproof hose 1 is placed in the gap 4 formed in the splicing surface 21 (including the concave portion 22). Through the above, the water blocking injection material 5 is press-fitted as described above to sufficiently close the gap 4.

No. 2. FIGS. 4 to 6 show a second embodiment of the reverse strike underground wall, which is the same as the previous example except for the supporting means 8 of the water blocking hose 1. In this case, the supporting means 8 is provided on both sides of the water shutoff hose 1 on the bottom 71 of the mold.
The cement molding strip 82 shown in FIG. 5 having a thickness slightly smaller than the outer diameter of the water blocking hose 1 is nailed, and the water blocking hose 1 is sandwiched from both sides by the cement molding strip.
In this case, the cement molding strip 82 is driven into the precast concrete 2 together with the water blocking hose 1. Others are the same as in the previous example, and a description thereof will be omitted.

3. FIG. 7 to FIG. 9 show a third embodiment of the reverse strike underground outer wall, and in this case also, except for the support means 8 of the water blocking hose 1, it is the same as the first embodiment. is there. In this case, the supporting means 8 is a strip with a hose fitting groove shown in FIG. 8, which is molded on the bottom 71 of the mold with a soft synthetic resin or rubber.
The water stop hose 1 is fitted into the hose fitting groove of 83. In this case, the strip with hose fitting groove 83
Is removed together with the dismantling of the formwork 7 of the precast concrete 2. Others are the same as those in the first embodiment, and the description thereof will be omitted.

4. FIG. 10 to FIG. 12 show a fourth embodiment of the reverse strike underground wall. Also in this case, the same as the first embodiment except the support means 8 of the water blocking hose 1. is there.
In this case, the support means 8 has a foamed resin strip 84 shown in FIG. 11, which is a foamed product made of urethane resin, nailed to the bottom 71 of the mold, and the waterproof hose 1 is dedicated to the upper surface of the foamed resin strip. The clip 6 is fixed in the in-plane sinking state. In this case, the foamed resin strip 84 is also removed together with the dismantling of the formwork 7 of the precast concrete 2. Others are the same as those in the first embodiment, and the description thereof will be omitted.

No. 5. FIG. 13 and FIG. 14 show a fifth embodiment of the reverse strike outer wall, and in this case as well, the water blocking hose 1
It is the same as the first embodiment except the supporting means 8 of FIG. In this case, the support means 8 has a dedicated clip 6 on the bottom 71 of the mold.
Alternatively, the water blocking hose 1 is covered with a poorly mixed mortar 85 after being properly nailed. In this case, the poorly mixed mortar 85 is poured into the precast concrete 2 together with the water blocking hose 1. Further, the water blocking injection material 5 from the water blocking hose 1 is press-fitted into the gap 4 of the joint surface 21 through the poor mixing mortar 85. Others are the same as those in the first embodiment, and the description thereof will be omitted.

[0012]

EFFECTS OF THE INVENTION According to the present invention, since a predetermined water-stopping hose is driven and supported on the joint surface of the precast concrete, the following effects are achieved. Even if the splicing surface, which is the mounting surface of the water blocking hose, is located on the lower surface of the concrete, the work of mounting the water blocking hose is performed downward, so the work is extremely easy and the working efficiency and the mounting accuracy can be improved. Since it suffices to support the water stop hose on the inner surface of the form,
Even if there is a protrusion such as a reinforcing bar on the connecting surface, the water-stopping hose can be installed before the protrusion is set without any trouble, and the installation work is not time-consuming. The installation work of the water shut-off hose can be done easily in a short time, and there is no hindrance to the start of post-work such as rebar assembly and formwork assembly. Since it is rare to work at high places and the work floor such as scaffolding can be reduced as much as possible, the danger and workability can be improved. Overall, cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a cut-away side view showing a first embodiment of a method for mounting a concrete joint spout water stop hose of the present invention.

FIG. 2 is a perspective view of a used member of the same example.

FIG. 3 is a cutaway side view of the same example after mounting a water shut off hose.

FIG. 4 is a cutaway side view showing a second embodiment of the method for mounting the concrete joint spout water stop hose of the present invention.

FIG. 5 is a perspective view of a used member of the same example.

FIG. 6 is a cutaway side view of the same example after mounting a water shut off hose.

FIG. 7 is a cutaway side view showing a third embodiment of the method for mounting the concrete joint spout water stop hose of the present invention.

FIG. 8 is a perspective view of a used member of the same example.

FIG. 9 is a cutaway side view of the same example after mounting a water shut off hose.

FIG. 10 is a cutaway side view showing a fourth embodiment according to the method of attaching the concrete splicing section waterproofing hose of the present invention.

FIG. 11 is a perspective view of a used member of the same example.

FIG. 12 is a cutaway side view of the same example after mounting a water shut off hose.

FIG. 13 is a cutaway side view showing a fifth embodiment of the method for mounting the concrete splicing section water shut off hose of the present invention.

FIG. 14 is a cutaway side view of the same example after attaching the water blocking hose.

FIG. 15 is an explanatory view of a water shut-off hose installation work in all the examples.

FIG. 16 is an explanatory diagram of whether or not the water shutoff hose can be attached in all the examples.

FIG. 17 is a cross-sectional view of a water shut off hose.

FIG. 18 is a cross-sectional view showing the action of the water blocking hose.

FIG. 19 is a cutaway side view showing a method of mounting a conventional concrete splicing section water shut off hose.

FIG. 20 is a cutaway side view showing another conventional method for attaching a water stop hose for connecting concrete parts.

FIG. 21 is an explanatory diagram of a water-stopping hose mounting operation in the conventional method.

[Explanation of symbols]

1 ... Water stop hose 2 ... Pre-cast concrete 3 ... Post-cast concrete 4 ... Gap 5 ... Water stop injection material 6 ... Special clip 7 ... Form 8 ... Supporting means 9 ... Support 11 ... Hose body 12 ... Recessed groove 13 … Small hole 14… Continuous valve 15… Vinyl mesh 21… Jointing surface 22… Recess 71… Formwork bottom 81… Plywood strip 82… Cement molding strip 83… Hose fitting slot strip 84… Foam resin strip 85 ... Poor mixed mortar

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location E04B 1/66 B E04G 21/02 103 A (71) Applicant 000000147 ITOCHU Corporation Osaka City, Osaka Prefecture 4-3-3 Kutaro-cho, Chuo-ku (71) Applicant 000150110 Takenaka Civil Engineering Co., Ltd. 8-21-1 Ginza, Chuo-ku, Tokyo (72) Inventor Yukio Kamiyama 2-5-14 Minamisuna, Koto-ku, Tokyo Incorporated Takenaka Corporation Technical Research Institute (72) Inventor Yasunori Shigemoto 10-10 Hashimotocho, Naka-ku, Hiroshima City, Hiroshima Prefecture Incorporated Takenaka Corporation Hiroshima Branch (72) Inventor Susumu Waku Shiraitodai, Fuchu, Tokyo 4-49-1 Shinei Master Builders Co., Ltd. (72) Inventor K. Ikeda 3-16-26 Roppongi, Minato-ku, Tokyo Stock company Pozoris Bussan (72) Who Toshiya Miki Tokyo, Minato-ku, Kita-Aoyama 2-chome No. 5 No. 1 Itochu Shoji Co., Ltd. in the (72) inventor Shinichiro Ando Tokyo Ginza, Chuo-ku, eight-chome No. 21 No. 1 stock company in Takenakadoboku

Claims (1)

[Claims] 1. A method for mounting a water stop hose for a concrete splicing part, characterized in that a water stop hose for ejecting a water stop injection material from various places on the peripheral surface is supported by driving on a joint surface of precast concrete. .